Cement-applying device for heel-nailing machines



e. M. PETITENGILL.

CEMENT APPLYING DEVlCE FOR HEEL NAILING'MACHINES.

APPLICATION FILED JUNE 21, ms.

1,412,571,. Patented Apr. 11, 1922.

3 SHEETS-SHEET l.

INVENTOR WITNESS George M. PefiQ/ZQ/l/ e. M. PETT ENGILL.

CEMENT APPLYING DEVICE FOR HEEL NAILING MACHINES.

APPLICATION FILED JUNE 21, 1918 I George M Pk/feqg/l/ ATTORNEY e. M. PE TTENGILL.

CEMENT APPLYING DEVICE FOR HEEL MAILING MACHINES.

APPLICATION FILED JUNE 21, I918- 1,412,537 1 I Patented Apr. 11, 1922.

3 SHEETS-SHEET 3.

WITNESSES:

' charged through PATENT OFFICE.

GEORGE M. PETTENGILL, OF HAVERHILL,

MASSACHUSETTS, ASSIGNOR TO HAMEL SHOE MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

OEMEN T-APPLYIN G DEVICE FOR HEEL-NAILING MACHINES.

Application filed June 21,

.1 '0 all whom it may consent:

Be it known that I, Gnoncn M. Pn'r'rEN- GILL, a citizen of the United States, residing at Haverhill, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Gement-Applying Devices for Heel-Nailing Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to devices for automatically applying cement or glue to the seat surface of a shoe heel prior to nailing the same tOtllC shoe..the devices herein described being particularly adapted for use with a heel nailing machine of the type disclosed in the patent to-Pettengill, 1.11.5).763. December 1, 1914, in which the heel is mounted upon a; support for the pricking operation and is thereafter supplied with nails and positioned over a suitably supported shoe for the driving of the nails. The invention in its broader aspect is not, however, confined to use with the above machine, or with heel nailing machines in general, but may be employed in connection with machines adapted for pricking heels only. or in fact may be employed with any machine wherein it is desired in connection with the operation of other mechanical devices to apply cement to the surface of material.

The present invention thus consists in the provision of means for supplying the surface of a support, upon which the ma .terial to be operated upon is mounted, with a covering of glue or cement whereby the surface of the material which contacts with the support during the mechanical manipulation of the material is at the same time coated with cement.

The invention further resides in the employment of a support for the material to be operated upon. the surface of said sup port being provided with one or more cement-exuding perforations. together with devices for'causing liquid cement to be dissaid perforations and onto the surface for contact with the material resting thereon.

The invention contemplates the use of a supporting plate for contact with the seat surface of a heel, said plate being provided with a perforation therein through which cement is caused to flow out onto the sur Specification of Letters Patent.

Patented Apr. 11, 1922. 1918. Serial No. 241,143.

face thereof, the plate being further provided with an element raised above the general level of the same and serving as a dam to limit the flow of cement to a predetermined portion of the area of the plate.

The invention also consists in providing a support for a shoe heel with a plurality of nterchangeable and detachable heel-e1igaging plates having provision for eXud 111g cement upon their heel-contacting surfaces. the several plates being provided with differently arranged. flow arresting dams to limit the area of the sin-face to whi h mcnt shall be applied in accordance with varying conditionsof use.

The invention further consistsin a cement-feeding appliance for use in connection with the heel support of a heel nailing machine consisting in the provision of a cement receptacle at a level lower than that of the support and an automatically operated device which acts to lift cement from the receptacle to a level higher than that of the support and which then permits the cement thus lifted to flow by gravity down to a cement-applying device carried by the support. the excess cement from the a plying device being conducted back to the receptacle.

()ther and further objects and advantages of the invention together with improved details of construction and combinations of parts will be hereinafter more fully described and particularly pointed out in the claims. reference being had to the accompanying drawings as illustrating a preferred embodiment thereof and in which,

Fig. 1 is a side elevation of so much of a heel nailing machine of known type as is necessary to illustrate the application of the invention thereto,

Fig. 2 is a plan view of the parts shown in Fig. 1,

Fig. 3 is a detail plan view, certain parts being broken away to show the interior con struction, of the heel holder with a heelsupporting plate in position, and

Fig. 4 is a plan view to enlarged scale, of a heel plate of slightly different form from that shown in Fig. 3.

Fig. 5 is a side elevation partly in section of a heel nailing machine employing this invention.

1 is a heel holder, or support, which is pivotally mounted adjacent its forward end at 2 upon the support 3, the latter being mounted for vertical adjustment as by means of a screw l. in a bracket 5 suitably uppoited upon the table or bed frame 6 or the ma chine. The heel holder 1 is provided at its rear end with a statioi'iary, upstanding V- shaped heel-positioning device '7, and upon its opposite sides with relatively adjustable heel-positioning members 55, all of the above parts being sul'istantially identical with the corresponding parts shown in the patent to Pettengill, 1,119,763, December 1., 1914, to which patent reference may be had for the detail construction thereof.

The upper surface of the support 1 is provided with an upstanding pin 12, and a screw-threaded opening 11". 10 is a heelsupporting plate arranged to be detachably mounted upon the upper surface of heel support 1, said plate being provided with an opening 11, (see Fig. 1) and with a second opening 12, said openings being arranged for engagement respectively with a screw 11. having threaded engagement with the opening 11 and with the upstanding pin 12, thereby serving to detachably position plate 10 with respect to the heel support 1, it being understood that plates 10 of various sizes and forms are usually supplied with this machine for operation upon heels of different shapes and sizes.

In accordance with the present invention the support 1 is provided with a cavity 13, and with a channel 1.4L leading from said cavity to the lateral face of the support, said channel being n-oloi'iged beyond the support by means of a nipple 15 suitably secured; to the support in any desired manner. The support is further provided with a second channel 16 leading from the upper face of the support adjacent the apex of the V- shaped positioning device? downward, and opening through the rear face of said support, and being likewise prolonged beyond said face by a short tube or nipple 17. The heel-supporting plate .10 is provided with a transversely extending series of openings 18, the precise arrangement of said openings, however. not being essential, said openings leading downwardly and opening into the cavity 13 in the support 1. The plate 10 is further provided with a transversely extending member 19 which rises slightly above the general level of the surface of the plate 10, the purpose of which will be hereinafter described.

To the rear of the bracket 5 is mounted a second. bracket 20, having upstanding from its opposite sides a pair of posts 21 having aligned bearings at their upper extremities wherein is fixedly mounted a'transverse rod 22. Upon the outer left hand extremity of said red. as shown in Fig. 2, is pivotally mounted a lever 23, having arms 24: 25 and 26. The arm 24 .extends upwardly and is connected with the usual nail-supporting slide 24 (Fig. 5) employed in machines of this type, while the arm 25 extends to the rear and has connected therewith near its extren'iity a chain 2? leading to a treadle or other device under control of the operator for actuating the same. To the extremity of lever arm 26 is connected a spring 28,-the opposite end of which is connected to the bracket 20 as by means of a pin 29, the spring 28 thus serving normally to maintain the lever 23 in the position shown in Figs. 1 and 5, and wherein the nail-supportiin .lide is held in. its forward nail-support inp' position.

3!) is a lever member having parallel arms 2' 32, said arms being provided with openings whereby said. lever member is pivoted to turn upon the rod 22, the arm 31 being extendee in a. forward direction and being slotted at its forward extremity as shown 3. 3 1-. is a spring connected at one end at l 5 to the bracket 20 and having its opposite end connected at 36 to the lever 30. the 11931 thus teudin normally to hold the award extremity of the arm 31 in an eleated position. 37 is a U-shaped member connected by -rneans of screws 38 to the lu'acket 20 a? d provided-with parallel, upstanding arms 39 10. the'upper extremities which lie in the plane of movement of the arm 31 of lever 30. thus serving to limit the swinging movement of the latter. 11 is a spring, relatively heavier than spring 341-. connected at one extremity to a pin 42 outstanding from the lever arm 31, and at its opposite extremity having connection at 13 to chain 27.

Pivoted as by means of a screw 44 to-the lateral face of the support 1 is a lever -15, said lever having a pin. 46 outstanding therefrom and engaging within the slot of the lever arm 31. Mounted upon the free, outer extremity of the lover 4-5 is a dipper 47, said dipper being provided with an opening 18 in the b ttom thereof. a nipple all) surrtmnd inp. said opening on the exterior of the dip per and serving to permit the connection of a flexible tube or conductor 19* to said dipper, the opposite extremity of said tube or conductor h aving connection with the nipple 15. 52 is a receptacle in the form of an open pan mounted. upon a bracket 53, carried in any desired manner upon the bracket 5 and at a level lower than the support 1, said pan being adapted for holding a supply oi" glue or cement. The dipper 4:7 is provided with a dep ession 50 at its forward edge to act as an overflow for cement to prevent the latter from flowing over the upper edge of the same and onto the pipe or tube 49 51 is a flange extending downwardly from the forwardelge of the dipper. and serving-.as the latter is lowered. into the cement. to prevent undue splashing of the cement.

dipper,

If desired, the lever arm 45 may be provided with a stop member 54 for engagement with the pan to limit the downward move ment of the dipper therein.

In Fig. i is shown a heel-supporting plate 10 the perforations 18 of which are located in a slightly different manner from the perforations 18 illustrated in Fig. 2, the transversely extending, upstanding; member 19 being also arranged differently, being at a e reater distance from the forward extremity of the plate. Awls 55 and nail drivers 56 as shown in Fig. are identical in construction and operation with corresponding 1 disclosed in the Petteugill patent above referred to, awls 55 being carried directly above heel holder 1 and arranged to pricl: a heel carried thereby preparatory to the nailing; operation.

The operation of the mechanism above descrilied follows, it being assumed that in the operation of the Pettengill Heel Nailin o; Machine, above referred to, a heel has just been priclred by the awls while mount ed upon the support 1 and has then been removed from said support and carried rearwardly for the reception of the nails. the parts being at this instant in the position shown in 'F 1g; 1'. Inorder now to release the nails for engagement with the holes in the heel formedin the pricking operation,

the operator or his assistant depresses the treadle controlling" the chain 27, thereby swinging the arm 24 rearwardlyr against the action of the spring 28 and releasing the nail-supporting" slide permitting the nails to drop into the holes formed in the heel The downward movement of the chain, simultaneously through the action of the spring; 4-1, swings the lever arm 31 downwardly and through the engagement of the pin 46 with the slot 33 also swings the lever downwardly thereby immersing: the dipper47 into the cement contained in the pan 52-. Immediately after the dropping of the nails the operator releases the treadle, permittinn' the spring 28 to retract the lever 24 thereby moving the nail-supporting; slide to forward position and at the same time the spring 34 operates to lift the forward end of lever arm 3L thereby raisingthe dipper 47 to the position shown in Fig. 1. As will be noted from inspection of this figure. the when in normal position, is at a level higher than that of the heel. support I. and any cement which is; thus raised by the dipper tends to move downwardly by gravity through the pipe 49 and into the cavity 13 of the support .1; and when said cavity has become filled, the cement will exude from. the perforations 18 and flow over the upper surface of the heel-supporting plate 10.

The operator now draws the heel carryinn the nails forward over the shoe into nailing position and places a new heel upon the supporting plate 10, the seat surface of the latter heel being in contact with said plate, and by reason of the fact that said plate has thus been covered with cement the seat surface of the heel resting upon the same will receive a coating; of the cement. The pressure to which the heel is submitted during the pricking operation insures a uniform application of the cement over the scat surface of the heel in a much more satisfactory manner than can be secured by the mere brushing or rolling of cement over the same as is the common practice. As it is desirable to avoid the cementingof the forward porti on of the heel scat surface, the transversely extending, upstanding member 19 has bee provided which acts as a dam to arrest the flow of'cement in a forward direction and by reason of the fact that this member extends to a slight distance above the general level of the plate L), it will be readily under stood that the pressure between the heel and said device 19 is greater than that between the heel and the remaining portion of the surface of the plate 10A thus preventing any tendency to force the cement into contact with the forward portion of the seat surface of the heel, Said transversely extendingx. flow-arresting device may be located at any desired distance from the forward. edge the supporting plate" Figs: 2 and 4 illustrating two different arrangements thereof thus limiting the application of cement to such parts of the heel surface as may be deemed desirable it being understood that aserics of heel-supportin r plates 10 having the cement-exuding perforations and the flow-arresting device arranged differently in the respective plates of the series may be provided with each machine for use under different conditions of operation.

Any cement wh ch may be squeezed out between the heel and the surface of the plate 10 will gradually collect at the lower rear extremity of the support 1. within the angle formed in the upstanding stationary-positionin; device 7 and will be conducted by the pipe 17 bacltinto the receptacle 5% The machine as thus constructed is found to operate in a very satisfactory manner, saving the time of the operator who is usually obliged to apply cement to the heel prior to the application of the heel to the shoe. while at the same time securing a more uniform distribution of cement and a more thorough impregnation of the heel surface by the cement than is attained by the hand operation.

The above arrangement for supplying cement to the heel-supporting plate has been found to operate in a satisfactory manner, but it is to be understood that the invention is not to be limited to the employment of this specific feed mechanism as any arrangement of parts whereby cement may be caused to flow over the surface of the heel-supporting plate either in an intermittent or continuous manner is contemplated as falling within the scope of the invention as hereinafter defined in the claims.

IVhile the attachment above described for applying cement has been described in connection with a heel nailing machine of specific form, in its general features it is equally applicable to nailing machines of different forms, as well as to machines adapted merely for pricking heels preparatory to nailing or to machines for use in building heels, or to the general application of cement to shoe parts, or other material, and the invention is not to be understood as limited to the embodiment thereof as above illustrated and described, but to be limited only by the terms of the claims hereto annexed.

Having thus described the invention and a preferred embodiment thereof what I desire to claim and secure by Letters Patent of the United States is, V

1. In a machine for operating upon shoe heels, in combination, means for pricking a heel, and means for applying cement to the heel simultaneously with the pricking operation.

i 2. In a heel machine. in combination, a heel support comprising a block having a cavity'therein, a cover plate for said cavity 'u'oviding a .ieel seat engaging surface,

and having an opening leading-into said cav 1ty,:and means for fee'dlng cement into said I cavity under pressure whereby it is caused to flow through said opening and onto the heel seat engaging surface of said plate.

3. In a cement applying device for heel machines, a heel-supporting block having a cavity therein, means for feeding cement under pressure to said cavity, and a detachable, heel-engaging cover plate for said cavity provided with a plurality of perforations leading into said cavity.

4. In a heel machine, in combination, a heel support having a surface for contact with a heel, means for feeding cement to said surface, and means for limiting the areaof said surface over which the cement may extend.

In a cement applying device for heel machines, a heel-supporting member having cement-exuding perforations therein, and means for limiting the flow of cement over the surface of said member.

6. In a cement applying device for heel machines, a support having a heel-contacting surface and provided with acementexuding opening therein, and a member extending transversely across said surface at one side of said opening and forming a dam to arrest the flow of cement thereover.

7. In a heel cementing mechanism for heel machines, a heel support providing .1 ccment-applying device, a cement receptacle at a lower level. than said device, means for lifting portions of cement from said receptacle to a level higher than said device and for permitting said portions of cement to flow under gravity pressure to said device, and a conduit for carrying excess cement from said device to the receptacle.

8. In a cement applying'device for heel machines, a support havingan element for contact withthe seat surface of a heel, means for feeding cement to said surface, and means for conveying excess cement away from said surface. '7 r 9. In a cement applying device for heel machines, a heel support having a cavity therein, and means for supplying said cavity with cement comprising a cement receptacle, intermittently acting means for removing a portion of cement from said receptacle, and means for conducting said portion of cement to said cavity.

10. In a cement feeding mechanism for a heel machine employing a cement-applylng device, comprising an open cement receptacle. a pivoted lever member, a dipper mounted upon said lever member and arranged to dip into cement within said receptacle, a flexible conduit leading from the base of said dipper to the cement-applying device and means for alternately lowering said dipper into the cement within the receptacle and for raising it to a point above said applying device.

I In testimony whereof, I have Signed my name to this specification.

GEORGE M. PETTENGILL. 

